Postretirement Plans (Reconciliation Of Benefit Obligations, Plan Assets, And Unfunded Status) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at end of year	$ 29,041		$ 27,178
Accrued postretirement benefit liabilities	(13,502)		(10,607)
Enterprise Integration Group (EIG) [Member]
Defined Benefit Plan Disclosure [Line Items]
Effect of settlement associated with sale of EIG			109
Qualified Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligations at beginning of year	35,773		32,817
Service cost	974	[1]	903	[1]	870	[1]
Interest cost	1,918	[1]	1,876	[1]	1,812	[1]
Benefits paid	(1,685)		(1,592)
Actuarial losses (gains)	3,632		2,032
Plan amendments	4		94
Divestitures/curtailments			(357)	[2]
Benefit obligations at end of year	40,616		35,773		32,817
Fair value of plan assets at beginning of year	25,345		22,154
Actual return on plan assets	1,349		2,886
Our contributions	2,285		2,240
Divestitures and other	(2)	[2]	(343)	[2]
Fair value of plan assets at end of year	27,292		25,345		22,154
Unfunded status of the plans	(13,324)		(10,428)
Prepaid pension asset	178		179
Accrued postretirement benefit liabilities	(13,502)		(10,607)
Accumulated other comprehensive loss (pre-tax) related to Net actuarial losses	15,698		12,263
Prior service cost (credit)	377		455
Retiree Medical And Life Insurance Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligations at beginning of year	3,046		2,938
Service cost	32		36		34
Interest cost	162		166		165
Benefits paid	(363)		(352)
Actuarial losses (gains)	(28)		105
Plan amendments	11
Divestitures/curtailments			(10)	[2]
Medicare Part D subsidy	2		18
Participants' contributions	161		145
Benefit obligations at end of year	3,023		3,046		2,938
Fair value of plan assets at beginning of year	1,833		1,630
Actual return on plan assets	114		86
Our contributions			311
Divestitures and other	2	[2]	(5)	[2]
Fair value of plan assets at end of year	1,749		1,833		1,630
Unfunded status of the plans	(1,274)		(1,213)
Accrued postretirement benefit liabilities	(1,274)		(1,213)
Accumulated other comprehensive loss (pre-tax) related to Net actuarial losses	648		684
Prior service cost (credit)	$ (10)		$ (37)

[1] Total net periodic benefit cost associated with our qualified defined benefit plans represents pension expense calculated in accordance with GAAP (FAS expense). We are required to calculate pension expense in accordance with both GAAP and CAS rules, each of which results in a different calculated amount of pension expense. The CAS expense is recovered through the pricing of our products and services on U.S. Government contracts and, therefore, is recognized in net sales and cost of sales for products and services. We include the difference between FAS expense and CAS expense, referred to as the non-cash FAS/CAS pension adjustment ($922 million in 2011, $454 million in 2010, and $456 million in 2009), as a component of other unallocated corporate costs on our Statements of Earnings. The non-cash FAS/CAS pension adjustment effectively adjusts the amount of pension expense in the results of operations so that pension expense recorded on our Statements of Earnings is equal to FAS expense.

[2] Primarily reflects the transfer of assets and liabilities associated with the 2010 sale of EIG (Note 14). An expense of $109 million was recognized in connection with this settlement, which reduced the gain on sale.